Preparation method of slurry for photoanode of nano TiO2 membrane of dye-sensitized solar cell
A technology of solar cells and dye sensitization, applied in the field of solar cells, can solve the problems of complex process and high cost, and achieve the effects of abundant sources, low cost and high specific surface area
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[0028] Dye-sensitized solar cells nano-TiO 2 The preparation method of slurry for film photoanode comprises the following steps:
[0029] a. Heat the industrial titanium liquid at a heating rate of 0.5-10°C / min to 110-250°C for 1-10 hours, then centrifuge the hydrolysis system to remove the supernatant, and then use 0.05-0.35mol / L for the remaining part Washing with dilute acid, centrifugal sedimentation, removing the supernatant, washing repeatedly until iron ions are free, and then washing with water until the pH is 5.5-7.0 to obtain metatitanic acid;
[0030] b. Adding a degumming agent to the metatitanic acid, and degumming at 20-90°C for 4-30 hours to obtain a metatitanic acid slurry; the amount of the degumming reagent added is 0.01-0.48 g / mL industrial titanium solution.
[0031] c. Add additives to disperse the metatitanic acid slurry evenly.
[0032] Among them, the above-mentioned dye-sensitized solar cell nano-TiO 2 In the preparation method of the slurry for fil...
Embodiment 1
[0043] Mix the industrial titanium liquid and water at a volume ratio of 5:6, put them into the condensing reflux device, and heat under reflux at an oil bath temperature of 114°C for 11 hours. The hydrolysis system was centrifugally settled at a relative centrifugal force of 9509g for 6 minutes. After the supernatant was poured off, the lower layer was washed by adding 0.1mol / L dilute sulfuric acid solution, and the supernatant was removed by centrifugal sedimentation. After checking that the washing supernatant is colorless, it is washed with water until the pH is 5.5-7.0 to obtain metatitanic acid.
[0044] Add tartaric acid at 0.046g / mL industrial titanium solution, degumming at 60°C for 26 hours to obtain metatitanic acid slurry.
[0045] After the end, add 5% PVA solution by volume ratio of 5% PVA solution: metatitanic acid slurry volume=1:5, add the ethanol solution of acetylacetone with 22% metatitanic acid slurry volume (volume ratio is acetylacetone : ethanol = 1: 1...
Embodiment 2
[0050] Mix the industrial titanium liquid and water at a volume ratio of 1:1, then add it to the condensation reflux device, and heat it under reflux at an oil bath temperature of 93°C for 8 hours. The hydrolysis system was centrifugally settled at a relative centrifugal force of 9509g for 6 minutes, the supernatant was poured off, and then 0.1mol / L dilute sulfuric acid solution was added for washing, the supernatant was removed by centrifugal sedimentation, and washed repeatedly until the washing was checked with 20% ammonium thiocyanate solution After the supernatant was colorless, it was washed with water until the pH was 5.5-7.0 to obtain metatitanic acid.
[0051] Add tartaric acid at 0.01 g / mL industrial titanium solution, degumming at 80° C. for 18 hours to obtain metatitanic acid slurry.
[0052] After finishing, be 11:100 to add the PVA solution of 5% by 5%PVA solution and metatitanic acid slurry volume ratio, then add the ethanol solution of 14% acetylacetone of meta...
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